Just published-an expanded paperback edition of

FOUNDATIONS OFEXPERIMENTALEMBRYOLOGYEdited by Benjamin H. Willier andJane M. OppenheimerNew Second Edition

Here are 14 scientific milestones from 1888 to the mid-i 970s.An ideal supplement at a price your students can afford* Eaich article is selected for its relevance and influence onthe historical evolution of embryology.* Heaidnotes explore the background and consequences ofeach airticle.* Three nzewt, airticles deal with the nerve growth factor( 1954). ionic communication between cells ( 1969), andwith over-all embryonic patterning ( 1 973).* The ness'i 8,000-word introductory essay by Dr. Oppen-heimer surveys the growth of developmental biology as anevolving discipline.

Contents: 1888 Contributions to the Developmental Mechanicsof the Embryo. On the Artificial Production of Half-Embryosby Destruction of One of the First Two Blastomeres, and theLater Development (Postgeneration) of the Missing Half of theBody (W. Roux). 1892 The Potency of the First Two CleavageCells in Echinoderm Development. Experimental Production ofPartial and Dotihle Formations (Hans Driesch). 1898 Cell-lineage and Ancestral Reminiscence (Edmund B. Wilson). 1902On Multipolar Mitosis as a Means of Analysis of the Cell Nu-cleus (Theodor Boyeri). 1907 The Living Developing NerveFiber (Ross G. Harrison). 1908 Observations on Oxidative Proc-esses in the Sea Urchin Egg (Otto Warburg). 1913 The Mecha-nism of Fertilization (Frank R. Lillie). 1914 SusceptibilityGradients in Animals (C. NI. Child). 1916 The Theory of theFree-Martin (Frank R. Lillie). 1924 Induiction of EmbryonicPrimordia by Implantation of Organizers from a Different Spe-cies (Hans Spemann and Hilde Mangold). 1939 TisSue Affinity,A Means of Embyronic Morphogenesis (Johannes Holftreter).1954 lIt Vitro Fxperiments on the Effects of Mouse Sarcomas108 and 37 on the Spinail and Sympathetic Ganglia of the ChickEmbryo (Rita Levi-Montalcinic Hertha Meyer aind Viktor Ham-burger). 1969 Ionic Communicaition between Early EmbryonicCells (ShizLIo Ito aind Werner R. Loewenstein). 1973 PositionalInformation in Chick Limb Morphogenesis (D. Summerbell,J. H. I ewis and L. Wolpert).

1974 Approx. 300 pp. 84986 paper $4.95

If you wish to consider Foundattions of Experi-mental Embryology as a required supplement inyour course, you may request an exam copy.

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ASSISTANT PROFESSOR OF BIOLOGYAt Lehigh University, with speciality in marinebiology. Responsibilities include teaching under-graduate and graduate courses in marine biology,advising M.S. and Ph.D. candidates, and con-ducting research in the marine field. Positioni isavailable September 1975; applications accepteduntil 15 January 1975. Preference will be givenito candidates with postdoctoral experience.Salary and fringe benefits are competitive. Sendcurriculum vitae and three letters of referenceto: Professor Sidney S. Herman, Search Commit-tee, Department of Biology, Lehigh University,Bethlehem, Pa. 18015.

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COASTAL AND OCEANOGRAPHICENGINEER

The Department of Engineering Sciences of theUniversity of Florida invites applications for aposition of Professor of Engineering Sciencesspecializing in coastal and oceanographic engi-neering. The applicant should be competent inthe areas of beach processes, wave propagationand forces, littoral processes, and or coastalstructures and foundations although other areasof specialization may be considered, and anlapplicant will be expected to participate in thesponsored research programs of the Coastal andOceanographic Laboratory. Applications with acurrentresum6 should be submitted by 15 Decem-ber 1974 to Knox Milisaps, Chairman, Depart-ment of Engineering Sciences, University ofFlorida, Gainesville, Florida 32611.

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Openings for ecologist (starting January 1975)and animal physiologist (starting September 1975)at assistant professor level. Duties involve par-ticipation in courses at undergraduate and M.S.graduate level. Ph.D. required, research expected,salary competitive. Send curriculum vitae andthree letters of recommendation to: Dr. WilliamJ. Nunez, Chairman, Department of Biology,University of Detroit, Detroit, Michigan 48221.An eqtal opportuinity employer.

riculsim vitae, transcripts, three letters from pro-fessional references, and statement of near-termprofessional goals in teaching, research, and serv-ice to: Dr. Norman D. Lees, Secretary, GeneticistSearch Committee, Department of Biology, In-diana University-Purduie University at Indianpolis,Indianapolis, Ind. 46205.Aui Affirtnatime Action/lEquial Opportunity Employer

SCIENCE, VOL. 186

ASSISTANT PROFESSOR OF CHEMISTRY.Applications are invited from candidates for a

position in a growing well-equipped departmeintAppointee is expected to participate in gradtiateand undergraduate teaching while pursuing in-dependent research programs. Postdoctoral te-search experiencc is desired in, but not restrictedto, the area of bioorganic chemistry. Applica-tions are especially welcome from (but notlimited to) women and members of minoritygroups. Send ctirriculum vitae, statement of re-search plans, and names of three references toDr. R. F. Steiner, Chairman, Department ofChemistry, University of Maryland BaltimoreCounty,5401 Wilkens Avenue, Catonsville, Mary-land 21228.

ASSISTANT PROFESSOR(Human Anatomist) for September 1975

Ph.D. with one or more years of postdoctoialresearch experience. Applicants are required toteach a human anatomy course in conjtinctionwith an ongoing physiology oourse in a niewhealth-related program for undergraduate stti-dents. Candidates are expected to develop anadvanced level course in a field related to theirresearch interest and maintain a vigorous re-search program. Send a curriculum vitae, state-ment of research and teachiisg experience, andthree letters of recommendation by Jantiarv1975 to:

ChairmanDepartment of Biological Sciences

Oakland UniversityRochester, Michigan 48063

An Eqtal Opportunity EnmploYer

ASSISTANT RESEARCH NEUROSCIENTIST

Qualifications include: (i) a strong backgroundin mathematics (Ph.D.) together with extensivetraining in the Neurosciences with particularemphasis on electrophysiology and slow wavesof the electroencephalogram; (ii) substantial ex-perience and a high level of skill in programmingboth large and minicomputers; (iii) knowledge ofelectrophysiologic signals recorded from thebrain; and (iv) experience and abilityto carryotit an active research program in unit recordingand slow wave recording.The University of California is an Equal

Opportunityl Afjirmatisve A ctio,t Employer-Wonien and Minorities are encoiuraged to applY.

Send r6sune and bibliography to:University of California, San Diego

Department of NeurosciencesLa Jolla, California 92037

FACULTY POSITION-BIOCHEMISTRYApplications are invited from individuals highlyqualified in biochemistry. Applicants should havepostdoctoral experience and must show accom-plishment or potential in both teaching and re-search. Academic rank dependent upon quLalifica-tions and experience. Submit cturriculum vitae, ashort statement ot research interest, and namesof three references (letters of recommendation arenot re,quired at this time) to Guilford G. Rudolph,Ph.D., Professor and Head, Department of Bio-chemistry and Molecular Biology, LouisianaState University School of Medicine in Shreve-port, P.O. Box 3932, Shreveport, Louisiana 71130.Eqital Opportunity /Affirmative Action Employer

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University academic position for Ph.D. biochem-ist in Midwest psychiatric institute. Equal Oppor-tunitY Employer.

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RENSSELAER POLYTECHNIC INSTITUTEDEPARTMENT OF BIOLOGY

Julllior factilty position as Assistant Professorin Developmental Cell Biology to begin in Janti-aiy, JtLne, or September 1975. Teaching re-sponsibility is to be chiefly embryology and agradtuate course of one's own choice. Participa-tion in elementary biology and senior projectslaboratory courses is also expected. ApplicantsmtList demonstrate research achievement and acurrent ongoing research program. Salary $12,500for 9 months; 6-week stummer session course inembryology will pi-ovide additional 2/9 of salary.Send currictltIm vitae anld forward three lettersof recommendation to: Dr. Joseph V. Landau,Chairman, Department of Biology, RenssselaerPolytechnic Institute, Troy, New York 12181.Equial Opportunity EmploYer.

BOTANISTAssistant Professoi-ship available fall 1975. Toteach general botany and advanced undergraduatecouLrse to be determined; supervision of under-graduate re'sear-ch. Postdoctoral experience and astronig interest in a liberal arts college CtLirricultimare highly desirable. We aremost interested in aperson having a broad backgrountid in biologicalscicncc with an evolutionary perspective at theorganismic lcvel. SendCtLirriculum vitae, transcripts,and three letters of recommendationto: Chairman,Department of Biology, Trinity College, Hartford,Conn. 06106. A,u equial opportunittl/affiroiative ac-tioti emiployer.

ELECTRON MICROSCOPE TECHNICIANSalary: $1084 to $1317 per month. Start: Il)ccember 1974. Responsible for an Electron

Micioscope Facility in support of biological andearth science research. Must be skilled in allareas of usage and maintenance of clectron micros-copy incltiding scanning and transmission. In-strLict faculty and graduate stuidents in specimenipreparation, instruLmenttisage, and inteipretatiolot' micrographs.Apply to: Personnel Office, Uniiversity of Cal-

ifornia, Santa Cruz, Santa Cruz, Calif. 95064.Ani Equal OpportunitY Eomployer withi ai Affirnia-tiue Actioui Plait.

ENVIRONMENTAL BIOLOGIST. Reseai-ch in-terests in systems stimtilation-modeling, or phys-iological ecology. Teaching general and advancedcourses in specialty plus participation in basiccourses; research expected. Rank Assistant Pro-fessor with Ph.D.; temporary Lecturer with es-sential completion of doctorate. Applications tobe completed by1 November, appointmcnt AugtList1975. SendCtLirrictLilum vitae, transcripts, three let-ters from professional references. and statementofnear-term professionial goals in teaching, re-search and serviceto: Dr. William S. Courtis,Secretary, Environinental Biologist Search Com-mittee, Department of Biology, Indiana Univer-sity-Purdue University at Indiannapolis, Indian-apolis, Ind. 46205.An AffirntieatireAtiionlEqial Opportuniiity Eniploye-

GENETICIST: Working on genetic control ofdepartmental processes in eukaryotes. Teachinggeneral and advanced courses in specialty plusparticipationl in basic cotirses; researclh expected.Ranlk Assistant Professor with Ph.D.:temporatyLeCtLirer with essential completion of doctorate.Applications to be completed by 1 Novembei,appointment January or August 1975. Send cur-

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ENERG YAND THE FUTURE

A new and authoritative AAAS book takesa long range look at energy. The broadscope and balanced perspective make it avaluable resource for anyone wishing toexplore the scientific and technologicalbases of the energy dilemma. Presently inuse as a text in more than thirty univer-sities and colleges.

"At last book on energy that gives a com-prehensive overview of emerging energytechnologies. It reads like a What's Whatin Energy Research."

Business Week, August 1973

Price: $9.9.5 ($8.95 Member price)Casebound$4.95 ($4.45 Member price)Paperbound

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J. ROBERT OPPENHEIMERRESEARCH FELLOWSHIPS

The Los Alamos Scientific Laboratory is proud to an-

nounce the second annual competition for the J.

Robert Oppenheimer Research Fellowships.

Candidates should be recent recipients of a doctoratein the physical sciences, natural sciences, mathemat-ics, or engineering who have demonstrated the ability

to perform research of the highest degree of excel-

lence.

The one to three year appointments carry an annual

salary of $22,500.00.

Closing date for the competition is December 1, 1974.

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SupervisorDivision 75-VLos Alamos Scientific LaboratoryP.O. Box 1663Los Alamos, New Mexico 87544

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RESEARCHIASSOCIATEPh.D. with emphasis in Vi-rology tissue culture and im-munology. Responsibility willinclude development andpilot plant production of can-didate viral and bacterialvaccines. Send C. V. to: D. H.Gattone, Personnel Manager.

MERRELL-NATIONAL LABORATORIESDivision of Richardson-Merrell Inc.SWIFTWATER, PA. 18370

An equal opportunity employer, m/f

171I1I OCTOBER 1974

||-IIIIIIIIIIIIIIIIIIIIIIIIIIII | Pclsiitii's PiII POSITIONS OPEN 11111111111111111111111I111111 IIIIIIIIIIIlIIIINSOECOLOGIST

Assistant Professor with Ph.D. to teach ecologyand develop research program in area of special-ty. Responsibilities include teaching introductorybiology course and supervision of laboratories.Ability to teach comparative anatomy or em-bryology desired. Advisement of undergraduatesand supervision of Master's thesis expected.Maximum salary $12,000 for academic year withsummer salary additional depending on institu-tional needs. Send curriculum vitae and namesof three professional references to: Dr. Tom P.Sergeant, Chairman, Department of Biology,Trinity University, 715 Stadium Drive, San An-tonio, Texas 78284. Responses should be madebefore 31 March 1975.

Trinity Unis ersily is an Equial OpportunityEmployer.

FACULTY LEVEL SCIENTIST

To develop and apply chemical probes ofmacromolecular structure and to pursue researchcomplementary to other aspects of an ongoinginterdisciplinary program in which specific needsare emerging for selective labeling and cross-linking reagents that will probe: (i) protein or-ganization in membranes, viruses, and muLlti-enzyme complexes and (ii) protein nuclei acidinteraction in chromatin, viruses, ribosomes, andother nucleoprotein particles. Research at theWorcester FouLndation for Experimental Biology,Inc., is supported to a large extent by outsidegrants, and scientists are expected, subsequentto hiring, to generate their own support to coversalary and project costs. The Worcester Founda-tion is an Equal Opportunity/Affirmativ,e ActionEmployer. Interested persons should send resumeand references to Dr. Ashton Gibbons, Directorof Personnel, Worcester Foundation for Experi-mental Biology, 222 Maple Ave., Shrewsbury,Mass. 01545.

HISTOLOGY SUPERVISOR

Registered and experimental histotechnologist tosupervise histology section of a modern, progres-sive, automated laboratory; 476-bed general, teach-ing hospital with all services. Expansion underconstruction. Located in New York State's ScenicSouthern Tier. Send resume to Personnel Depart-nient, Wilson Memorial Hospital, 33-57 HarrisonStreet, Johnson City, New York 13790.

PHARMACOLOGIST-BIOCHEMIST Ph.D.

Postdoctoral or research position available im-mediately. Background in general drug evaluationmethods and in immunotechniques including im-munochemistry and RIA is required for teamwork with physicians, organic synthesis chemists,and biochemists. Salary commensurate with ex-perience. Equial opportunity/affirmativ e actionemployer. Contact Milos Sovak, M.D., RadiologyResearch, School of Medicine, University ofCalifornia in San Diego, S-004, La Jolla, Cali-fornia 92037.

POSTDOCTORAL ASSOCIATE

Immediate position available for candidate in-terested in Research on bacteriophage morpho-genesis, biochemistry and genetics. Submit cur-riculum vitae and list of publications with lettersof reference to: Ms. M. T. Dixon, The Institutefor Cancer Research, 7701 Burholme Ave., Phila-delphia, Pa. 19111.

An Equial OpportunitYl/Affirmativ,e Action Employer

JUNIOR FACULTY POSITION-PATHOLOGYA University of Washington position is availableat the Instructor or Assistant Professor level inthe Department of Pathology. We seek someoneinterested in teaching medical students generaland systemic pathology and working closely witha senior staff person to develop this presentation.not only in Seattle but in our WAMI sites inAlaska, Montana, and Idaho. In addition, thisperson will also be able to develop their back-grouLnd in neoplasia or liver disease by initiat-ing their own work or by collaborating in on-going investigation. Send letters of inquiry andcLirriculum vitae to Dr. Edward A. Smuckler, De-partment of Pathology, University of Washington,Seattle, Washington 98195.

An Equal Opportunity-Affirmative ActionEmployer

MANAGER, VIRAL PRODUCTS RESEARCHWe are seeking an individual with a Ph.D. or

Ph.D./D.V.M. in Microbiology or related scienceand extensive experience in applied virology ormicrobiology in a commercial laboratory or re-search institute who is willing to accept thechallenge and responsibility to demonstrate tech-nical and managerial expertise and ability.

Will be responsible for supervising the stafland coordinating the activities of several groupsof scientists associated with the research anddlevelopmiient of veterinary viral vaccines.

Please send summary of training and experi-enlce. data available and salary requirements to:

L. V. Wyatt, Personnel AdministratorAffiliated Laboratories DivisionWhitmoyer Laboratories, Inc.

Subsidiary of Rohm and Haas CompanyP.O. Box 221

White Hall, Illinois 62092An Equal Opportunity Employer

TEACHING POSITION AVAILABLESEPTEMBER 1975

PHYSIOLOGlST. Assistant Professor, Ph.D.Undergraduate and graduate teaching in vertebratephysiology and zoology; preference for researchat cell-organ level with background in specialsensory organs or reticulo-endothelial system;postdoctoral experience desirable; direct graduatestudents and participate actively in research.Write Dr. A. W. Pritchard, Chairman, SearchCommittee, Department of Zoology, Oregon StateUniversity, Corvallis, Oregon 97331. OSU is anaffirmnative action employer.

PLANT ECOLOGIST (Ph.D.). Assistant Pro-fessor to begin September 1975. Teaching dutieswill include development of an upper-level under-graduate course in plant ecology and participationin the department's other ecology offerings. Ap-plicants should have a strong background inbotany and plant taxonomy, and preference willbe given to those whose research interests in-clude field studies in structure and function ofplant populations and communities. Submit cur-riculum vitae, copies of recent publications, andhave three letters of recommendation sent to:Ecology Search Committee, Department of Bio-logical Sciences, University of Delaware, Newark,Delaware 19711. An equal opportuinity, affirma-tiu e action employer.

PLANT PHYSIOLOGIST AND ECOLOGISTPh.D. To replace a staff member on leave. Start-ing 1 February 1975. Send curriculum vitae anda list of three references to: Dr. Miriam F.Bennett, Department of Biology, Colby College,Waterville, Maine. Colby College is an equialopportunitY employer.

PLANT SCIENTIST

The Board of Studies in biology is seeking ap-plications for a position as assistant professor.We plan to appoint a broadly trained plantscientist whose major interest is in the algae; anexperimentalist in developmental or ecologicalaspects would be preferred. In addition to teach-ing a major course in the algae, the successfulcandidate would be expected to contribute to alower division biology course and college pro-grams, and to develop a graduate program. Appli-cants should submit a curriculum vitae, reprints,a short statement of teaching and research plans,and the names of four references to the PlantSciences Search Committee Board of Studies inBiology, Thimann Laboratories, University ofCalifornia, Santa Cruz, Calif. 05064, by 15 Novem-ber 1974. The University of California is apiEqual Opportunity/Affirmatise Action Employer.

U

ENVIRONMENTAL SPECIALISTCHEMICAL ENGINEER

Headquarters Environmental Affairs Department seeks a process engineerwith natural gas, petroleum, or chemical industry experience who has hadsignificant responsibility for environmental impact sudies. Position is mem-ber of a team with specialists in gas engineering, geology, biology andsocio-economics.

Assignments include determining means to control the environmental impactof Company operations (petroleum reforming; LNG processes: coal gasifica-tion; natural gas production, pipelining, and fractionation), keeping abreastof federal regulatory action, preparing portions of impact statements, servingas a definitive expert in proceedings, and providing staff guidance to operat-ing companies.

Please send complete r6sum6 and salary requirements to: Mr. S. A. Rogers,Director-Placement, Columbia Gas System, 20 Montchanin Road, Wilmington,Delaware 19807.

An Equal Opportunity Employer (M/F)

IninunopharniacalogistThe Pharmacology Department of our Central Research Labo-ratories in Groton, Connecticut, has an immediate opening foran immunopharmacologist. A Ph.-D. with some experience inanti-inflammatory research is preferred, although applicantswith a general immunobiology background will be considered.Excellent employee benefits are associated with this positionwhich allows one to work and live in an attractive Connecticutshore location.Please send r6sume to: Mr. R. H. Sayre, Personnel Manager,Pfizer Central Research, Eastern Point Road, Groton, Connecti-cut 06340.

An equal opportunity employer m/f

I

172 SCIENCE, VOL. 186

INTERNATIONALREGULATORYOPERATIONSAlmost phenomenal expansion of Abbott's InternationalOperations has created an important assignment withworldwide horizons. You'll join a leader in health care;present sales over $600 million, projected to over onebillion dollars in 3 or 4 years.Your prime responsibility is to assist and understudythe Director-especially in the following areas: Assistaffiliates, agents, and distributors with registration ofcorporate products in their countries; Assist in obtaininggovernment clearance for clinical trials; Interpret U.S.laws as they apply to Abbott export business; Prepareand follow through on IND's submitted to the FDA; andreview and approve all promotional material used out-side the U.S.We need a self-assured, mature person with regulatoryexperience in industry or government with a Ph.D. in apara-medical or pharmaceutical science. Knowledge offoreign languages is a definite asset.The compensation package will prove more than inter-esting to the dynamic and innovative individual we seek.Location is a modern Northern Chicago headquarte,rsfacility. Please send resume, including salary progression,in confidence, to: AA

Joanne Roberts BProfessional Employment NORTH CHICAGO, ILL. 60064

An Equal Opportunity Employer M/F

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ILL Il" jLEILrtIL NIL.LILI LL C1LLI Departnient of 'slicrobiologyl-titLlL ILIlI orII<; c0 i.IIILI 11 1 11 .11111 oUniversity of Illinois Models BAT-8F,Il1CLilII LCILLLL N LIL III 1U111 II IL LL'LC Urbana-Champaign, Illinois 61801 Models BAT-8,illdC oL LIllLILIIlS L11-~C % t11 1111.11I IL IL I ISIL I LL BAT-8CSCIILI LtIF1ICCLLIIIIl LitiIL ILLI I C DIGITAL readoutrstops -Kot'her. t-,ld IDoartient of Nl icrohiolog.land errors. Portable accu

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School ot lltblie Health aind Associate lealthiPrograois, iil ersitl of South 'Carolina. ('-lilliuia. South Carolina 29208.

P051l)' I ORI\L R.ISI \R( 11IN BIOC'II' ICilSI K

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F cauilts (tf NsedicineXI ciloriall I iii ersits oft Nell toindlaS .J 0h n's, N c -. ft'> iid and, (';1n1;1d

IRO(I TISSOR 01' MElI(HANI( U1.1' NGIN I F RING

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d 1;tl.i;. n (Iv("i"ltXlr t IC c cIt1 ,ICC19L tI'%''tlAN Il (. 1. 1 rancis, Chairman. I)epartinent

otf Mluc'haiical FIigineerinlg. Slate t nilersill ofNell 's (ork at lBtffallo Buffillo, Nells (irk 142141 IIz1'z¢. /''r1(wro111 IIIfi stt111 II11(t 1[1/ 1 C.

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I OXICOLOGIS I

IlL 111 ILL IL'IldLIpLLI11 I I t 1a1 1111 ' L tLII II Itill IlILLIIiils 'IILLI irlL 11t1j11' iltLLL pL'LLttL liLhCIrItLLIL

iln iImal tI\i oIlo I IC(LiiIlCIt I'h I) 1) N Ni. o'rNI.S. LICII 'IL 'LIIIlht t CsSCntl.lt ill litI oL ex-

pmericrcL I, llcC tfL I IIgLC bCLL titII tIl 1iLIcomLme'LLLCLLIItC 1w ilL exLp riecLLCe SrIIcI \ItLI-I-I'IC LLLinl cLILfiLlCIlL toC Mr. Jo?hni Raigeni. Director (If

P'ersonnel, International Research and l)er elop_nient Corp., Mattassan, Nichigani 493)71

1-14

R1F SPIR,XIK RY PHYSI10L(TIST,I'l.h.D.

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Richalsrd ZtLckerioiani, 111i).312-654-4445) collect

Sirmid(I, (Gill anid Associates. Inii.13111 Vest 22 Street

Oak ltrook., Illiois1 60521

N IROIL OGiST \IOLECtL 1.IR BI0OLOGIST.1I Lll-LL11II ?L LIIIlt'Ill ILL-1tl 1.1 II1.1(h' L>S)'.l (ll-cItI11 Npplt ';l illt 11i1O'

CIL ICiLL ILtIi IlL IILLIl.r Ill0 lh!I N CI o11 tL II IdCL L'IoI II I LII 'LII

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-tilili IkiII LIt; ii I L. ILL I)r. Ger.ldd 1).Shoiekimian. Chlairiman. D)epartiment of Mlicro-h)olpglo ad lnIounologi. Scihool of \ledicinie.I eplt' I ii-iersitr5, I'Plil.adeI)lliia, Pa. 19141).I LI Il (1/m 11111r i 1i flCirmltiLv ActiL1 / 111/pl0iL 1.

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1i L.''IIllC to: Dr. ILI. I. 1 udenberg, (C lirinlan.1)D II.rtimelint of Basic and (Clinical ilnlmmolotg

d N licrot,iolog, Medical Unisversity o(t SouthC arolina., 80) Brre Street. Charlestoll. SolithCarolina 29401 AIL, 1111 (LI/IL im LL 11cr/IL

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I -(O Si ll)OC l' (RA\I l':l.l.(1\O'NSH11 5P C()N1-PA0R11)0(1 ORU I'l '

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Dr. 1.. S. I lnder%(ohod, .Assistanit D)irector torScienie, Nas al Aretic Research I ahoratorl,Barrosi , Alaska 99273. AIl eI(/ua1 )IppLJLIl I II

rate: readings in 2secs. Battery or AC, -0-700 F or 0-400 C.LJse any copper'con- 1.stantan thermocoupleor Bailey microprobes.

Circle No. 668 oIL Reciders Service CcircL

ECONOMY GRADE NMR SOLVENTSAcetone d, 99°'0 50g $37.50Benzene d 99'/L 50g $45.00Chloroform d 99.6 5009g $34.00

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ILOG # COMPOUND1433-07 Adenosine 5'-

Triphosphate,Tetralithium [8-3H](ethanol: water 1 :1)

25

it PRICE$ 40./i mc165/5 mc

1433-09 Adenosine 5S- 12,000- 40./1 mcTriphosphate, 25,000 165./5 mcTetrasodium [8-3H](ethanol water 1 1) - -____

3122-13 L-Alanine[14C1 135-165 90./500 uc(0 01 N HCI sol.) (U) 170./l mc

3122-15 L-Arginine [14C] 270-320 75./250 uc(0.01 N HCI sot.) (U) 140./500 uc

1433-38 Cytidine 5'- 5,000- 40.J1 mcTriphosphate, 15,000 165./5 mcTetratithium [5 3H]

1433-39 Cytidine 5- 5,000- 40./i mcTriphosphate, 15,000 165/5 mcTetrasodium [5- HI _

2433-06 Deoxyadenosine 5'- > 10,000 40./i mcTriphosphate, 165 /5 mcTetratithium [8 Hl1]

2433-07 Deoxyadenosine 5'- -10,000 40./1 mcTriphosphate, 165./5 mcTetrasodium [8-3H]_

2433-33 Deoxycytidine 5- 15,000- 40.1 mcTriphosphate, 30,000 165./5 mcTetraltithium [5-3HI _.

2433-34 Deoxycytidine 5'- 15,000- 40/1 mcTriphosphate, 30,000 165./S mcTetrasodium [5-3H.

2433-58 Deoxyguanosine 5'- >10,000 40./1 mcTriphosphate. 165./5 mcTetralithium [8-3Hlj

2433-56 Deoxyguanosine 5'- >10,000 40./l mcTriphosphate, 165./5 mcTetrasodium [8-3HI

3122-31 Glycine [14C] 95-100 60./S00 uc(0.01 N HCI sol.) (U) 110./i mc

1433-59 Guanosine 5'- 5,000- 40./l mcTriphosphate, 15,000 165./5 mcTetratithium [8-3H]

1433-60 Guanosine 5'- 5,000- 40./1 mcTriphosphate, 15,000 165./5 mcTetrasodium [8 3H1I

3122-41 L-Leucine [4G) 270-320 170.500 uc(0.01 N HCI sol.) (U) 320./l mc

3122-45 L-Lysine [14C] 270-300 170/500 uc(O01 N HCI sol.) (U) 320/1 mc

3122-49 L-Phenylalanine [40) 405-495 170 /500 uc(0.01 N HCI sot.) (U) 320./i mc

3122-5i L-Proline [f4CJ 225-265 170./500 uc(0.01 N HCI sol.) (U) 320./l mc

3122-53 L-Serine [14C] 135-165 170./500 uc(0.01 N HCI sot.) (U) 320/11 mc

2533-83 Thymidine [methyl 3H] 360 60./5 mc(st. ag. sot.) 260./25 mc

2533-84 Thymidine [methyl-3H 1900 60./5 mc(St,(st. aq. sol.) 260/25 mc

2533-85 Thymidine [methyl-3Hi 3000 601/5 mc(st. ag. sol.) 260/25 mc

2533-86 Thymidine [methyl-3H] 6000 60./S mc(st. ag. sol.) 2601/25 mc

2533-87 Thymidine 1methyl-3Ht > 10,000 60/5 mc(sts ag. sol.) 260,/25 mc

2533-88 Thymidine lmethyl-3H1 40,000- 60./5 mc(st. aq. sol. 60,000 260./25 mc

2433-94 Thymidine 5'- >40,000 40/1 mcTriphosphate, 150/5 mcTetralithium [methyl-3H[ -_

^2433-95 Thymidine 5S- >40,000 40/1 mcTriphosphate, 150./5 mcTetrasodium [methyI-3HI

1533-94 Uridine[5-3Ht 2000 50./5 mc(st. aq. sol.) 220/25 mc

1533-95 Uridine [5-3HI 4000 50./5 mc(St. ag. sol.) 220./25 mc

1533-96 Uridmne [5-3H[ 8000 50S5 mc(st ao. sot.) - 220./25 mc

1533-97 Uridmne t5-3 H1 >20,000 50./5 mc(st. aq. sot) 2201/25 mc

1533-92

1433-89

1433-90

Urrdmne f5,6-4'H1(St. aq. sol.)Uridine 5'-1Trir-hi-inhnts-

40,000-m0.00010,000-25,000

10,000-25,000

5-3H]312261 2 26

50./5 mc220 125 mc40./i mc165./5 mc

4O.J1 mc165./5 mc

140/500 ucll >C- 1

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225-265 1